CIRCUIT ARRANGEMENT FOR LINEARLY AMPLIFYING AND DEMODULATING AN AM-MODULATED AUDIO SIGNAL, AND INTEGRATED SEMICONDUCTOR ELEMENT FOR SAID CIRCUIT ARRANGEMENT

摘要

PHN 12.458 12.04.1988 Circuit arrangement for linearly amplifying and demodulating an AMmodulated signal, and integrated semiconductor element for said circuit arrangement. A linear amplifier and demodulator for AM-modulated signals comprises a logarithmic amplifier having a number of amplifier stages successively performing their limiting actions, an antilog circuit and a DC separation between the logarithmic amplifier and the antilog circuit (Fig. 1)